Grinding-machine.



PATENTED OCT. 24, 1905.

P. BEX.

GRINDING MACHINE.

APPLIOATION FILED JAN. 31. 1905.

Allow/e IINI earns ATENT OFFICE.

GHlNDlNG llllACl-llNE.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed January 81, 1905. Serial No. 243.518.

1'0 all whom it may concern.-

Be itknown that I, FREDERICK Bnx, a citizen of the United States,residing at Brightwood, in the District of Columbia, haveinvented newand useful Improvements in Grinding-Machines, of which the following isa specification.

My present invention relates to improvements in grinding-machines; andthe object is to simplify and improve the existing art in providing amachine of the kind named and for the purposes intended which isexpeditions and eflicacious in reducing an edge-tool to a cutting edgeby the application of revolving grindstones simultaneously to both sidesof the tool.

Another purpose is to produce originally and to preserve in repairingthe preferred double-concave contour in razors and other edgetoolblades.

Another object is to make the operative parts of the machine easilyadjustable to blades of different thicknesses.

The invention resides in the novel construction of parts and theiraggroupment in operative combinations, as will be hereinafter fullydisclosed, and the asserted novelty then particularly pointed out anddistinctly claimed.

In the annexed drawings I have fully and clearly illustrated myimprovements.

Reference being had to the drawings, Figure 1 is a perspective view ofthe complete machine. Fig. 2 is a longitudinal vertical sec tion throughmachine. Fig. 3 is a transverse vertical section of the machine. Fig. 4is a detail perspective view of the adjusting-block which moves theframes vertically when they are adjusted relatively by the adjlisting-screw. Fig. 5 is a detail perspective view of one of thebox-frames which carry the operative elements of the grindstones.

In the drawings the same reference notations are used in the severalillustrations to designate the same parts, and, reference being hadthereto, A designates a suitable bed or base provided with a verticalperipheral flange 1. The bed is made of such size as may suit it to thecharacter of the machine to be mounted thereon, and the flange 1 is madeof such height as may be required to catch and hold the dripping-s fromthe grindstones. The bed may be mounted and secured to anysuitablesupport in any well-known manner.

On the floor of the bed A, at one end thereof, is secured a plate 2,having its outer end directed vertically, as at 3, the wholeconstituting a support for the spindles, on which are loosely mountedthe driving-pinions. In the upper end of the vertical plate 3 are madeapertures, in one of which is fixedly secured a spindle 4, whereon isloosely mounted the main driving-pinion 5, formed with a hub the outerend of which is made with diametrically-positioned clutch members orseats 6, adapted to be engaged by a sleeve 7 of a crank 8, the sleevebeing loosely disposed on the extending portion of the spindle 4 and isformed at its inner end with radially-projecting ears 9 to engage in theseats or clutch members, whereby the rotatable elements of the machinemay be operated. Another spindle 10 is positioned and fixedly secured inthe plate 3, whereon is loosely journaled an idler-pinion 11 in meshwith the driving-pinion 5, substantially as indicated in the drawings.

12 13 designate housings preferably consisting of metal casingsrectangular in crosssection, as shown, and having their inner walls cutaway at their lower portions and their side walls cut obliquely, as at14, for convenience in placing, adjusting, and nranipulating theslide-rods and adjusting-screw. In each of the housing-casings, adjacentto the upper ends, are secured beari1'1gsleeves 15 16, wherein arerevolubly mounted shafts 17 18. On the outer extending portion of theshaft 17 is fixedly mounted a pinion 19, in mesh with the driving-pinion5, and on the shaft 18 is mounted a pinion 20, in mesh with theidler-pinion 11, substantially as indicated in Fig. 1 of the drawings.The shafts 17 18 are extended inwardly beyond the inner walls of thehousing-casings, and on the extensions are mounted the grindstones 21,duplicates in size and, as hereinafter stated, adjustable to and fromeach other. Under the grindstones is placed a water trough or tank 22,in which the lower parts of the grindstones run. This water-trough isprovided with a sleeve 23, which slid-ably engages over a standard 2 1,formed with notches 25, and is secured in bed. A by any suitable means.To the sleeve 23 is pivotally secured an arm 26, the nose or free end ofwhich is adapted to engage in any one of the notches 25, as shown inFig. 3 of the drawings, and thus hold the water-trough in any elevationto which it may be moved. It will be perceived that by this supportingdevice the water-trough may be adjusted to a position to always permitthe grindstones to run at the requisite depth in the water or otherlubrication.

On the spindles of the pinions 5 and 11 are loosely disposed the lowerends of spreading arms or links 27, the upper ends of the links beingloosely disposed on the shafts l7 18, substantially as indicated in thedrawings.

In housing-casing 13 are rigidly secured upper and lower bars 28 29,positioned parallel with each other and in vertical alinement andproject through the casing 13 and extend through both side walls of thecasing 12. Through the inner side walls of the casings is let anadjusting-bar 30, having right and left screw-threads, as shown,whichengage in threaded nuts or apertures 31 in the walls of the casings. Theone end of the adjustingbar 30 is made with an angular termination 32,to which a suitable turning-key 33 may be applied and the threaded barturned as may be required. It will be perceived that when the threadedbar is turned on its axis the housing-casings are moved to or from eachother as the direction of the threaded bar may carry them. At the sametime the function of the links 27 maintains the constant engagement ofthe pinions. It will be seen, further, that the function of the linksand that of the threaded bar is to carry with the housingcasings thegrindstones into closer or more remote relations.

To the plate 3 is secured a guide-block 3a, made with inclined endsurfaces 35 to engage coincident inclines 36, made at the lower ends ofeach housing-casing. By this construction and arrangement thehousing-casings are prevented from binding on the slide-bars 28 29 andare maintained in vertical relation during the process of adjustment.

It will be observed that the housing-casings are carried in relativeposition by the slidebars and that the casings and the grindstones aremainly supported by the links and the inner walls of the housingsresting on the inclines of the guide-block.

A razor-blade 37 is shown in Fig. 1 as being subjected to thegrindstones.

To utilize the device,the proper adjustments are made to bring thegrindstones to the desired position, and then the trough is suppliedwith lubrication, the crank is applied, and the machine is ready foroperation. The blade to be subjected to the grinding process is thenheld between the revolving surfaces of the grindstones and manipulatedas skill may require.

The grindstones revolve in opposite directions, as indicated by thearrows in Fig. 1 of the drawings.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. In an edge-tool-grinding machine, vertically-disposed housingslaterally adjustable to and from each other means carried by thehousings to make the adjustment, shafts journaled in the housings,grindstones mounted on the shafts, and means to rotate both shafts atthe same time.

2. In an edge-tool-grinding machine, vertically-disposed housingslaterally adjustable to and from each other and simultaneouslyvertically, a shaft journaled in each housing, a grindstone mounted oneach shaft, means carried by the housings to simultaneously adjust themlaterally and vertically, and means to rotate theshafts simultaneously.

3. In an edge-tool-grinding machine, oppositely-positioned rectangularhollow housingcasings, means mounted in the housings to simultaneousl yadjust them vertically and from and toward each other, shafts journalcdin the housings, and means to rotate the shafts synchronally.

4. In an edge-tool-grinding machine, oppositely positioned housings,bars projected 8 through the housings on which they are slidablymounted, a right-and-left threaded screw to move the housings to andfrom each other, and a guide-block having inclined end surfaces on whichthe housings engage.

5. In an edge-tool-grinding machine, the combination of rectangularhollow housings formed with inclines at their lower inner end portions,means carried by the housings to simultaneously adjust them laterallyand vertically, a grindstone-shaft journaled in each housing, and aguide-block having inclined end surfaces on which the inclines of thehousings engage.

6. In an edge-tool-grinding machine, a driving-pinion, an idler-pinion,vertically and laterally adjustable housings, shafts in the housings,pinions on the latter shafts, arms loosely mounted on and connecting thepinions, and means to rotate the pinions.

In testimony whereof I afiix my signature in presence of two subscribingwitnesses.

FREDERICK BEX.

\Vitnesses:

JACOB SOHAEFER, K. A. HERON.

